Change allotments color and pattern (#3548)

amenity-points.mss

@@ -2372,11 +2372,9 @@
       }
       [feature = 'landuse_meadow'],
       [feature = 'natural_grassland'],
-      [feature = 'landuse_grass'] {
-        text-fill: darken(@grass, 50%);
-      }
+      [feature = 'landuse_grass'],
       [feature = 'landuse_allotments'] {
-        text-fill: darken(@allotments, 50%);
+        text-fill: darken(@grass, 50%);
       }
       [feature = 'landuse_farmyard'] {
         text-fill: darken(@farmyard, 50%);

landcover.mss

@@ -1,6 +1,6 @@
 // --- Parks, woods, other green things ---
 
-@grass: #cdebb0; // also grassland, meadow, common, village_green, garden
+@grass: #cdebb0;        // Lch(90,32,128) also grassland, meadow, common, village_green, garden, allotments
 @scrub: #c8d7ab;        // Lch(84,24,122)
 @forest: #add19e;       // Lch(80,30,135)
 @forest-text: #46673b;  // Lch(40,30,135)
@@ -38,7 +38,6 @@
 
 // --- Other ----
 
-@allotments: #eecfb3;       // Lch(85,19,70)
 @bare_ground: #eee5dc;
 @campsite: #def6c0; // also caravan_site, picnic_site
 @cemetery: #aacbaf; // also grave_yard
@@ -302,11 +301,11 @@
 
   [feature = 'landuse_allotments'] {
     [zoom >= 10] {
-      polygon-fill: @allotments;
+      polygon-fill: @grass;
       [way_pixels >= 4]  { polygon-gamma: 0.75; }
       [way_pixels >= 64] { polygon-gamma: 0.3;  }
     }
-    [zoom >= 14] {
+    [zoom >= 13] {
       polygon-pattern-file: url('symbols/allotments.png');
       polygon-pattern-alignment: global;
       [way_pixels >= 4]  { polygon-pattern-gamma: 0.75; }

symbols/generating_patterns/allotments.md

@@ -0,0 +1,20 @@
+Pattern file for allotments was generated in two steps.
+
+SVG file is generated using JSDotPattern generator (http://www.imagico.de/map/jsdotpattern.php) using these options:
+
+- symbol definition: pixel
+  - offset: 8 8
+  - scale: 0.25
+- symbol pattern (foreground color): #f2faeb
+- point generation
+  - distance: 4
+  - regular square dot pattern
+- rendering: render (px aligned)
+- pattern size: 64
+
+(direct link: x,64,jdp34225;gs,4,32,32;rd,1,0,0,pixel,0.25,8,8,0,jdp4911,f2faeb,cdebb0;)
+
+This generates file allotments.svg
+
+However, since SVG files are not properly handled by Mapnik, the file was converted to png with alpha channel: symbols/allotments.png
+